Comments and General Information:
Watson is a single motor Turbot based on Grant McKee's original turmet.
The solar engine is Mycroft2152's Holmes 555 SE. When built with an IR LED from Radio Shack, this SE has a unique lock-up behavior. The firing is influenced by subtle changes in light. The result is that Watson reacts to a person waving a hand near it, or even bending over to take a closer look.